Abstract: A method and apparatus for mixing a containerized concentrate with diluent from a supply system. In the method, a container of concentrate is placed within a container station. The container is opened. A flowable portion of the concentrate from the container is drained into a mixing volume. A first portion of diluent is introduced into the mixing volume. A residual portion of the concentrate is washed from the container with a second portion of the diluent to produce a volume of wash diluent. The wash diluent is added to the mixing volume. The first and second portions of diluent have a total volume proportional to the total volume of concentrate. The draining is at least substantially completed prior to the washing. The apparatus has a mixing tank and a container that retains the container and delivers the concentrate, through a concentrate outlet, to a mixing tank. An opener is disposed to open the container within the container station.